BeeE'(YmfO)' is named after the lambda portal gene B; BeeE'(YmfO)' is a member of the Pfam PF04860 Phage_portal family. Full length BeeE(YmfO) was an HK97 family portal protein now most closely represented by a 413 aa E. coli E22 protein (UniProtKB: B3I764). Phage portal dodecamers form the capsid pore for DNA packaging and extrusion and are head-tail connectors during phage assembly.